Process of fixing viscose on textiles, &amp;c.



I lulose,

their brilliancy and produces unevenness in UNITED STATES PATENT OFFICE- ARTHUR FIELDING, OF SALFORD, EN GLAND.

SPECIFICATION forming part of Letters Patent No. 708,761,

Application filed February 18. 1902.

To all whom it may concern:

Be it known that I, ARTHUR FIELDING, manufacturing chemist, a subject of the King of Great Britain, residing at George street, Salford, in the county of Lancaster, England, have invented a certain new and useful Improved Process of Fixing Viscose (Cellulose Sulfocarbonate) on Textile and other Fabrics and Materials, of which the following is a specification.

My invention relates to an improved process of fixing viscose (cellulose sulfocarbonate) on textile and other fabrics and materials.

The viscose prepared according to the specification of United States Letters Patent, granted to Cross, Bevan, and Beadle, No. 520,770, dated the th of J une, 1894, has hitherto been imperfectly fixed by means of a brine-bath upon the goods to which it is applied for filling or finishing purposes, and this brine-bath has a detrimental effect upon many colors, and consequently diminishes the shades. According to my invention I dispense with the brine-bath and substitute a steaming or aging process, which does not alter or aifect the color of. the materials. For example, I impregnate the goods by padding or mangling or by any of the other well-known methods with a solution of the viscose containing from one to ten per cent. of dry c'elaccording to the effect desired. The alkali in the viscose may or may not be non-- tralized or partially neutralized by the addidated September 9, 1902. SerialNo. 94,637. (No specimens.)

tion of a solution of bisulfite of potash or other suitable bisulfites. I dry the goods and fix the viscose by passing them preferably through a heated chamber containing a sufficient nu mber of rollers to dry quickly, and at the end of the chamberI inclose aspace which I use as a steaming or aging box, having a pressure of steam of one f three pounds, or I may employ'a stenter r steam-cylinder, then steam for two or three minutes, through an aging-machine. By either of the foregoing processes of steaming I am able to dispense with the usual brine-bath forfixing the viscose.

utilized as a other colors, fixing agent mordant for anilin and certain and also as a decomposing and for mordants, such as metallic The viscose thus fixed can be.

or pass salts, employed in dyeing with certain colors,

such as alizarin and dye-woods. are finally washed and dried.

What I claim as my invention, and desire to secure by Letters Patent of the United States, is-

The herein describedcose on goods, said process consistingof the impregnation of the goods with viscose, drying the goods, and fixing the viscose by means of steaming.

In witness whereof I have hereunto set my l of two witnesses. I ARTHUR FIELDING.- Witnesse's: a

H. B. BARLOW, S. W. GILLETT.

hand in presence The goods process of fixing vis-' 

